Thank you, I will look for that one!I just replaced my 5½-year-old factory Panasonic battery 2 weeks ago with OEM Mazda “High Performance” battery which is made by Interstate. It looks exactly the same as the Interstate battery sold at Costco which is much cheaper. The only difference is OEM battery uses black plastic case but Interstate uses white. So go get Interstate Group 35 battery at Costco (~$79) if you need a new battery.
Not sure who made Kirkland Signature battery for Costco in Canada though.